horsefly weed vs Baptisia tinctoria

horsefly weed and Baptisia tinctoria both are nouns.

Word	Noun	Adjective	Verb	Adverb
horsefly weed	Yes	No	No	No
Baptisia tinctoria	Yes	No	No	No

As nouns, horsefly weed and Baptisia tinctoria are synonyms defined as:

horsefly weed and Baptisia tinctoria: much-branched erect herb with bright yellow flowers; distributed from Massachusetts to Florida

Other synonyms of horsefly weed include indigo broom, rattle weed.

horsefly weed (noun)	Baptisia tinctoria (noun)
much-branched erect herb with bright yellow flowers; distributed from Massachusetts to Florida	much-branched erect herb with bright yellow flowers; distributed from Massachusetts to Florida